Version 5.5 combines extensibility, ease-of-use Oak Grove Systems on Monday announced its latest workflow engine, Reactor 5.5.Reactor 5.5 began life as a software product sold primarily to OEMs, but with this version Oak Grove hopes to appeal directly to end-user customers. To that end, Oak Grove enhanced the forms support and business rules functions within the business process execution engine. The company also improved the portal so that users can graphically lay out a flow chart and make it live with one click. Oak Grove was spun off from NASA’s Jet Propulsion Lab in 1998. Software DevelopmentApplication IntegrationTechnology IndustrySmall and Medium Business